Fiqh-us-Sunnah Volume 4, Funerals and Dhikr, Fiqh 4.143.

Section : Bidding Farewell to One’s Relatives, Asking them for Prayers, and Praying for Them.

Abu Hurairah reported that the Prophet, peace be upon him, said, “Anyone intending to go on a journey should say to those staying behind, ‘I commend you to Allah Whose trusts are never lost’.” (Ibn As-Sinni)

‘Umar reported that the Prophet, peace be upon him, said, “When something is entrusted to the care of Allah, He guards it.” (Ahmad)

It is reported from Abu Huraraih that the Prophet, peace be upon him, said, “When one of you intends to go on a journey, he should bid farewell to his brothers, for Allah will make their prayers a means of good.”

It is sunnah that the members of the family, as well as the friends and those who see the traveller off should pray for him as in the following prayer transmitted from the Prophet.

Salim reported that when someone wanted to leave for a journey ‘Ibn Umar would say to him, “Come over to me so that I may bid you farewell as the Prophet, peace upon him, used to bid us farewell,” and that he used to say, “To Allah I commend your din (Islam), your trust (That is his family, those he leaves behind, and his property), and the conclusion of your deeds.”‘

In another report we read that when the Prophet, peace be upon him, bid farewell to a man he would hold his hand and would not leave it until the man himself dropped the Prophet’ s hand. The rest of the hadith is similar to the one given above. Tirmizhi considers this a sound (hasan sahih) hadith.

Anas reported that a man came to the Prophet, peace be upon him, and said, “O Allah’s Messenger, I intend to go on a journey, so please give me provision for the journey.” The Prophet, peace be upon him, replied, “May Allah provide you with piety (taqwa).” The man said, “Give me some more provision.” The Prophet, peace be upon him, said, “And may Allah forgive your sins.” The man said, “Give me still more.” The Prophet, peace be upon him, then replied, “And may Allah facilitate good for you wherever you may be.” Tirmizhi considers this a sound hadith. (Reported by Abu Daw’ud and Tirmizhi, who considers it to be a sound, hasan sahih, hadith)

Abu Hurairah reported that a man said to the Prophet, peace be upon him, “O Allah’s Messenger, I intend to proceed on a journey, so give me some advice.” The Prophet, peace be upon him, said to him, “Fear Allah, the Mighty and the Exalted, and glorify Him on every elevated piece of ground.” When the man turned away to go, the Prophet, peace be upon him, said, “O Allah, make the distance short for him, and make his journey easy for him.” Tirmizhi considers this a sound hadith.