Salaat al-Haajah
Question

                Assalamu Alaikum wa Rahmatullah
  What is the authenticity of Salat ul Hajja ( the Salat of Need)Please
      answer if possible.Jazak Allah Khairun
Praise be to Allah.Salaat al-Haajah is not prescribed in sharee’ah (Ibn
    ‘Uthaymeen, Fataawaa Noor ‘ala’l-Darb, 1/169). Imaam
    al-Tirmidhi (may Allaah have mercy on him) narrated a hadeeth about Salaat al-Haajah in
    his Sunan, but he pointed out that it is da’eef (weak). He said in the chapter
    on what was reported concerning Salaat al-Haajah: “’Ali ibn ‘Eesaa ibn
    Yazeed al-Baghdaadi told us, ‘Abd-Allaah ibn Bakr al-Sahmi told us, and
    ‘Abd-Allaah ibn Muneer told us, from ‘Abd-Allaah ibn Bakr from Faa’id ibn
    ‘Abd al-Rahmaan from ‘Abd-Allaah ibn Abi Awfaa who said: ‘The Messenger of
    Allaah 
 (peace and blessings of Allaah be upon him) said: “Whoever has any need
    of something from Allaah or from any of the sons of Aadam, let him do wudoo’ and do
    it well, and pray two rak’ahs, then let him praise Allaah and send blessings on the
    Prophet 
 (peace and blessings of Allaah be upon him), then let him say: ‘La
    ilaaha ill-Allaah il-Haleem il-Kareem. Subhaan-Allaahi Rabb il-‘arsh il-‘azeem.
    Al-hamdu Lillaahi Rabb il-‘Aalameen. As’aluka moojibaat rahmatika wa
    ‘azaa’im maghfiratika, wa’l-ghaneemata min kulli birrin wa’l-salaamata
    min kulli ithmin. Laa tada’ li dhanban illaa ghafartahu wa la hamman illaa farrajtahu
    wa la haajatan hiya laka ridan illa qadaytahaa, yaa arham al-raahimeen (There is no
    god but Allaah, the Patient, the Most Generous. Glory be to Allaah, the Lord of the Mighty
    Throne. Praise be to Allaah, the Lord of the Worlds, I ask You for Your mercy and
    forgiveness, for help to do all good deeds and for protection from all sins. Do not leave
    for me any sin but You forgive it, any worry but You relieve it, or any need with which
    You are pleased but You meet it, O Most Merciful of those who show
    mercy).’”’” 
    Abu ‘Eesaa (i.e., al-Tirmidhi) said: “This is a ghareeb hadeeth.
    The fact that Faa’id ibn ‘Abd al-Rahmaan is among the narrators makes the
    hadeeth very weak. Faa’id is Abu’l-Warqaa’.”
Al-Albaani said: “It is very weak indeed.” Al-Haakim said:
    “Fabricated ahaadeeth were narrated from Ibn Abi Awfaa.” (Mishkaat
    al-Masaabeeh, 1/417). This hadeeth was also narrated by Ibn Maajah, may Allaah have
    mercy on him, in his Sunan, 1/144, also via Faa’id ibn ‘Abd al-Rahmaan.
    Al-Albaani said, in Da’eef Sunan Ibn Maajah, no. 293: “(It is) very
    weak.”
On the basis of the above, this prayer is not prescribed in Islam, but if
    the Muslim is faced with distress, he should pray and make du’aa’ in general
    (with no restrictions as to a certain number of rak’ahs or a specific
    du’aa’ that is not proven in sound ahaadeeth, etc.), because Allaah says
    (interpretation of the meaning): “And seek help in patience and prayer…”
    [al-Baqarah 2:45], and because of the hadeeth of Hudhayfah in which he said:
    “When anything distressed the Prophet 
 (peace and blessings of Allaah be upon
    him), he would pray.” (Reported by Abu Dawood in his Sunan, 1124, and
    classed as hasan in Saheeh al-Jaami’, 4703).And Allaah knows best.