What were the instructions Prophet Muhammad (saw) gave to his companions regarding the common tasks of helping and greeting others?
      Narrated Al-Bara' bin 'Azib:                          Allah's Apostle ordered us to do seven (things): to visit the sick, to     follow the funeral processions, to say Tashmit to a sneezer, to help      the weak, to help the oppressed ones, to propagate As-Salam      (greeting), and to help others to fulfill their oaths (if it is not      sinful). He forbade us to drink from silver utensils, to wear gold      rings, to ride on silken saddles, to wear silk clothes, Dibaj (thick      silk cloth), Qassiy and Istabraq (two kinds of silk). (See      Hadith No. 539, Vol. 7)