Ibn Majah

´It was narrated from Abu Hurairah that the Messenger of Allah (ﷺ) said:` “The pilgrims performing Hajj and ‘Umrah are a delegation to Allah. If they call upon Him, He will answer them; and if they ask for His forgiveness, He will forgive them.”

´It was narrated from Ibn ‘Umar that the Prophet (ﷺ) said:` “The one who fights in the cause of Allah, and the pilgrim performing Hajj and ‘Umrah are a delegation to Allah. He invited them, so they responded to Him, and they ask Him and He gives to them.”

´It was narrated from Ibn ‘Umar (from ‘Umar) that he asked the Prophet (ﷺ) for permission to perform ‘Umrah, and he gave him permission and said to him:` “O younger brother, give us a share of your supplication, and do not forget us.”

´It was narrated from Safwan bin ‘Abdullah bin Safwan said that he was married to a daughter of Abu Darda’. He came to her and found Umm Darda’ there, but he did not find Abu Darda’. She said to him:` “Do you intend to perform Hajj this year?” He said: “Yes.” She said: “Pray to Allah for us to grant us goodness, for the Prophet (ﷺ) used to say: ‘The supplication of a man for his brother in his absence will be answered. By his head there is an angel who says Amin to his supplication, and every time he prays for his brother, he says: “Amin, and the same for you.’” He said: “Then I went out to the marketplace where I met Abu Darda’, and he told me something similar from the Prophet (ﷺ).”