Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "Whoever performs Hajj on behalf of a deceased person, then the one on whose behalf the Hajj was performed also receives a reward like that person's; whoever gives a fasting person something to break his fast with receives a reward like his (the fasting person's); and whoever invites to good receives a reward like the reward of the one who acts upon it."
Al-Tabarani recorded it in al-Mu'jam al-Awsat; its chain contains a narrator, Ali bin Yazid bin Bahram, about whom I have found no one giving his biography, and the rest of its narrators are thiqat (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الحج / 5686
Hadith Gradingمحدثین:إسنادہ ضعیف
Hadith Takhrij«أخرجه المعجم الأوسط للطبراني برقم: 5814»