Hadith 6:618
Sa'id ibn Yahya narrated to us, from Sufyan ibn Husayn, from al-Zuhri, from Abu Umamah ibn Sahl, from his father, that the Messenger of Allah (may Allah bless him and grant him peace) prayed over the grave of a woman and said the takbir four times.
حدثنا سعيد بن يحيى عن سفيان بن حسين عن الزهري عن أبي امامة بن سهل عن أبيه أن رسول الله صلى الله عليه وسلم صلى على قبر امرأة فكبر اربعا