Abu Umama reported that the Messenger of Allah ﷺ passed by him while he was moving his lips.The Prophet ﷺ asked, "What are you saying, Abu Umama?"He replied, "I am remembering my Lord."The Prophet ﷺ said, "Shall I tell you of something greater, or better, than your remembrance throughout the night and day, and throughout the day and night? Say, 'Glory be to Allah, as many times as the number of His creation. Glory be to Allah, filling all that He has created. Glory be to Allah, as many times as the number of all that is in the earth and the heavens. Glory be to Allah, filling all that is in the earth and the heavens. Glory be to Allah, as many times as the number of what His Book has recorded. Glory be to Allah, as many times as the number of everything. Glory be to Allah, filling everything.' And say the same with 'Praise be to Allah.'"
أن رسول الله ﷺ مر به وهو يحرك شفتيه فقال: ماذا تقول يا أبا أمامة؟ قال: أذكر ربي قال: أفلا أخبرك بأكثر- أو أفضل- من ذكرك الليل مع النهار والنهار مع الليل؟ أن تقول: سبحان الله عدد ما خلق، وسبحان الله ملء ما خلق، وسبحان الله عدد ما في الأرض والسماء، وسبحان الله ملء ما في الأرض والسماء، وسبحان الله عدد ما أحصى كتابه، وسبحان الله عدد كل شيء وسبحان الله ملء كل شيء، وتقول الحمد مثل ذلك.
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Nasai narrated it in Amal al-Yawm wal-Layla (166), and Ibn Khuzayma graded it sahih (754), and Ibn Hibban narrated it from him (830). Both came through the route of Ibn Abu Maryam, who said, Yahya bin Ayub informed us, Ibn Ajlan narrated to me, from Musab bin Muhammad bin Shurahbil, from Muhammad bin Saad bin Zurara, from Abu Umama Bahili, and he mentioned it.Its chain is hasan because of Muhammad bin Ajlan and his teacher Musab, for the two of them give a hadith the grade of hasan. Ibn Hajar also graded it hasan in Nataij Afkar (1/85). The hadith has other routes from Abu Umama found in Ahmad (22144), Hakim (1/513), and Tabarani in Al-Dua (1743-1744).A note, in Sahih Ibn Hibban it appears as "Muhammad bin Saad bin Abu Waqqas" instead of "Muhammad bin Saad bin Zurara," even though Ibn Hibban narrated it from his teacher Ibn Khuzayma, and in Ibn Khuzayma's version it reads "Muhammad bin Saad bin Zurara." See Ithaf Mahra (6/344).