There is no amputation of the hand except in the case of one who steals something worth one quarter of a dinar or more
Question

                What is the minimum amount of robbery for which hand is amputated in Islam . I found a Hadith where it says Quarter of a Islamic Dinar or Three Dirhams. I calculated it with Dinar . I found that one Dinar is a coin of pure gold weighing 4.25 grams, so quarter ( ¼ ) is 1.0625 gram of gold. In my country the value of 1 gram gold today is 2397 Indian rupees . So 2397 multiplied into 1.0625 is 2546.81 Indian rupees. So is it 2546 Indian rupees which is 38.5 $ US dollars or 140.2 Qatari Riyals or or 144.4 Saudi Riyals. Is this Calculation right ? . If there is a mistake then please explain the mistake in complete detail with proofs. Please explain in detail . Please answer this question dont give me some related question.... Please please.
Praise be to Allah.
	It is proven in as-Saheehayn from the hadith of 
	‘Aa’ishah (may Allah be pleased with her) that the Prophet (blessings and 
	peace of Allah be upon him) said: “The hand of the thief is not to be cut 
	off except for one quarter of a dinar or more.” Narrated by al-Bukhaari 
	(6789) and Muslim (4494). 

	This hadith indicates that one quarter of a dinar is the 
	minimum value for which the hand of the thief must be cut off. So whoever 
	steals something worth one quarter of a dinar or more is to have his hand 
	cut off, but if a person steals three dirhams, his hand is not to be cut off 
	unless their value on the day of the theft is equal to one quarter of a 
	dinar, because the basic standard is the dinar, not dirhams. The value of 
	the dirham varies, so its value is to be checked against that of the dinar, 
	and whether it was worth more or less, at the time of the theft. If it was 
	equal in value to one quarter of a dinar, then the hand of the thief is to 
	be cut off. 

	It is on this basis that the hadith of Ibn ‘Umar (may Allah 
	be pleased with him) is to be interpreted, in which he said that the Prophet 
	(blessings and peace of Allah be upon him) cut off the hand of the thief for 
	the theft of a shield, the value of which was three dirhams. Agreed upon. 
	That is, because at that time three dirhams were equal in value to a quarter 
	of a dinar. 

	Imam ash-Shaafa‘i (may Allah have mercy on him) said 
	concerning the minimum value of stolen goods (for which the hand of the 
	thief is to be cut off), and that it is equal to the value of one quarter of 
	a dinar: 

	The hadith of Ibn ‘Umar is in harmony with the hadith of 
	‘Aa’ishah, because three dirhams at the time of the Prophet (blessings and 
	peace of Allah be upon him) and afterwards were equal in value to one 
	quarter of a dinar… 

	So if a thief was caught, and the value of what he stole on 
	the day that he stole it was worked out, and was equivalent to one quarter 
	of a dinar, his hand would be cut off, but if it fell short of the value of 
	one quarter of a dinar, his hand would not be cut off. 

	So the basic measure is one quarter of a dinar. If dirhams 
	rise in value to the point that two dirhams become equal in value to a 
	dinar, then the hand of the thief is to be cut off for one quarter of a 
	dinar, even if it is worth half a dirham. If dirhams fall in value to the 
	point that one dinar becomes equivalent to a hundred dirhams, the hand of 
	the thief is to be cut off for one quarter of a dinar, which (in that case) 
	would be twenty-five dirhams. 

	Dirhams are no more than items, like garments or sheep. If 
	one quarter of a dinar, or something equal in value to one quarter of a 
	dinar, or something equal in value to ten sheep, is stolen, then the hand is 
	to be cut off for one quarter of a dinar, which is equivalent to ten sheep. 

	Similarly, if a thief steals something that is equivalent to 
	one quarter of a dinar, and it is one quarter of a sheep, then his hand is 
	cut off for the equivalent of one quarter of a dinar. 

	The basic measure is the dinar, so the dirham is like trade 
	goods, and no attention is to be paid to whether its value is low or high 
	[at the time of the theft]. 

	End quote from al-Umm (6/159) 

	Shaykh Ibn ‘Uthaymeen (may Allah have mercy on him) said: 

	The words “one quarter of a dinar”, and the dinar is the 
	mithqaal [a unit of weight], and the mithqaal weighs 4.25 grams. So one 
	quarter of a dinar weighs one and one sixthteenth grams. So if a person 
	steals gold that weighs one gram plus one sixtheenth of a gram, his hand is 
	to be cut off, because of the hadith of ‘Aa’ishah (may Allah be pleased with 
	her), according to which the Prophet (blessings and peace of Allah be upon 
	him) said: “The hand of the thief is not to be cut off except for one 
	quarter of a dinar or more.” This is narrated in as-Saheehayn. Based 
	on that, this hadith is specifying the general meaning of the verse in which 
	Allah, may He be exalted, says (interpretation of the meaning): 
	“And 
	(as for) the male thief and the female thief, cut off (from the wrist joint) 
	their (right) hands… ” [al-Maa’idah 
	5:38]. So for anything 
	below this threshold, the hand is not to be cut off. 

	With regard to the other hadith, which says that the 
	Messenger of Allah (blessings and peace of Allah be upon him) cut off a 
	thief’s hand for stealing a shield the value of which was three dirhams, 
	this is to be interpreted as indicating that three dirhams were equivalent 
	to one quarter of a dinar at that time, and a dinar was equivalent to twelve 
	dirhams of silver.

	End quote from ash-Sharh al-Mumti‘ (14/334) 

	As the questioner mentioned, a dinar weighs 4.25 grams of 
	gold, and one quarter of a dinar is equivalent to one and one sixteenth 
	grams, which as the questioner says is 1.0625 grams. 

	As for defining the price of that in terms of currency, it is 
	clear from the answer that the price varies from one day to another, 
	according to the price of gold. So it is the price on the day of the theft 
	that should be worked out.