Al-Waqidi (may Allah have mercy on him) said: Ibrahim (may Allah be pleased with him), the son of the Prophet (peace and blessings be upon him), died on Tuesday, the 10th of Rabi' al-Awwal, 10 AH, and was buried in al-Baqi'. He (may Allah be pleased with him) died among the Banu Mazin tribe, at the home of Umm Burzah bint al-Mundhir (may Allah be pleased with her), who belonged to Banu al-Najjar. At the time of his death he (may Allah be pleased with him) was 18 months old.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب صلاة الخسوف / 6349