It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "When a father looks at his child and the child makes him happy, the reward of freeing a slave is recorded for the child." It was said: "O Messenger of Allah, even if he looks three hundred and sixty times?" He (peace and blessings be upon him) said: "Allah is the Greatest."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from al-Hakam bin Aban except Ibrahim bin A'yan; Layth is alone in narrating it, and it is narrated from the Messenger of Allah (peace and blessings be upon him) only with this chain."
Hadith Referenceالمعجم الأوسط / باب الميم / 8646
Hadith Gradingمحدثین:إسناده حسن
Hadith Takhrij«قال الهيثمي: إسناده حسن فيه إبراهيم بن أعين وثقه ابن حبان وضعفه غيره «مجمع الزوائد ومنبع الفوائد، ج 8، ص 156»» «أخرجه الطبراني فى «الكبير» برقم: 11608»