Jami` at-Tirmidhi, Hadith 3415 ⓘ
Maslamah bin `Amr said: “`Umair bin Hani used to perform a thousand prostrations every day and recite a hundred thousand Tasbīḥs every day.”
حَدَّثَنَا عَلِيُّ بْنُ حُجْرٍ حَدَّثَنَا مَسْلَمَةُ بْنُ عَمْرٍو قَالَ كَانَ عُمَيْرُ بْنُ هَانِئٍ يُصَلِّي كُلَّ يَوْمٍ أَلْفَ سَجْدَةٍ وَيُسَبِّحُ مِائَةَ أَلْفِ تَسْبِيحَةٍ .
also referenced under: Book 48, Hadith 46 (In-Book) & Volume 6, Book 45, Hadith 3415 (DarusSalam)