The 99 Names · From the Prophetic Sunnah
Al-Witr الوتر
The Single, the One who has no partner and no equal.
Explanation
A detailed explanation of this name (in Arabic) is in: Sifat Allah 'Azza wa Jall al-Waridah fi al-Kitab wa al-Sunnah — 'Alawi ibn 'Abd al-Qadir as-Saqqaf (Dorar.net) — p. 367 ↗
Evidence
«… وَإِنَّ اللَّهَ وِتْرٌ يُحِبُّ الوِتْرَ»
Call upon Allah by this name
“To Allah belong the Beautiful Names, so call upon Him by them” — Al-A'raf 180
Example for practice
اللهم إنك وتر تحب الوتر، فاجعلني من أهل الوتر، وتقبّل مني قيامي
O Allah, You are Single and love what is odd; make me among those who pray the witr, and accept my night prayer.
An example for practice, not a transmitted text — following the Quranic way of closing a request with the fitting name (see Ibn al-Qayyim, Bada'i' al-Fawa'id 2/249).