Musannaf Ibn Abi Shaybah 31617 — The supplication on climbing Safa

Wahb bin al-Ajda' said: "I heard Sayyiduna Umar (may Allah be pleased with him) say: 'One is to begin with the hill of Safa. First face the House of Allah, then say the takbir seven times; and between every two takbirs let there be praise and extolling of Allah, blessings upon the Prophet (peace and blessings be upon him), and asking for oneself. The same is to be done on the hill of Marwah.'"