Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) narrated that a man came to the Prophet (peace and blessings be upon him) and said: "I have come to pledge allegiance to you on emigration, and I have left my parents weeping." He (peace and blessings be upon him) said: "Go back and make them happy as you made them weep."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 17830