The nurse of Sayyiduna Muhammad bin Talhah (may Allah be pleased with him) (may Allah be pleased with her) narrates: When Muhammad bin Talhah was born, I brought him to the Prophet (peace and blessings be upon him). He (peace and blessings be upon him) asked: "What have you named him?" We said: Muhammad. He (peace and blessings be upon him) said: "This is my name, and let his kunyah be Abu al-Qasim."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 21921