Supplication for the morning only
سُبْحَانَ اللهِ وَبِحَمْدِهِ عَدَدَ خَلْقِهِ ، وَرِضَا نَفْسِهِ ، وَزِنَةَ عَرْشِهِ ، وَمِدَادَ كَلِمَاتِهِ (ثلاث مرات(
Subḥaan-allaahi wa biḥamdihi ‛adada khalqihi, wa riḍaa nafsihi, wa zinata ‛arshihi, wa midaada kalimaatihi (3 times)
How far from imperfections is Allah and I praise Him by the number of His creations and His pleasure, and by the weight of His throne, and the ink of His words. (3 times)
(Riyadh As Saliheen, Muslim, Book 16, Hadith 1433)
وعن أم المؤمنيين جويرية بنت الحارث رضي الله عنها أن النبي صلى الله عليه وسلم خرج من عندها بكرة حين صلى الصبح وهي في مسجدها، ثم رجع بعد أن أضحي وهي جالسة، فقال: "مازلت على الحالة التي فارقت عليها؟" قالت: نعم، فقال النبي صلى الله عليه وسلم: "لقد كنت بعدك أربع كلمات ثلاث مرات، لو وزنت بما قلت منذ اليوم لوزنتهن: سبحان الله وبحمده عدد خلقه، ورضا نفسه، وزنة عرشه، ومداد كلماته""
Juwairiyah bint Al-Harith (May Allah be pleased with her) reported, the Mother of the Believers: The Prophet (ﷺ) came out from my apartment in the morning as I was busy in performing the dawn prayer. He came back in the forenoon and found me sitting there. The Prophet (ﷺ)said, "Are you still in the same position as I left you." I replied in the affirmative. Thereupon the Prophet (ﷺ) said, "I recited four words three times after I had left you. If these are to be weighed against all you have recited since morning, these will be heavier. These are: Subhan-Allahi wa bihamdihi, 'adada khalqihi, wa rida nafsihi, wa zinatah 'arshihi, wa midada kalimatihi [Allah is free from imperfection and I begin with His praise, as many times as the number of His creatures, in accordance with His Good Pleasure, equal to the weight of His Throne and equal to the ink that may be used in recording the words (for His Praise).”
(Sahih Muslim 2726)