Four phrases that outweigh a whole morning
The Prophet ﷺ told Juwayriyah these outweighed everything she had said since dawn.
لَقَدْ قُلْتُ بَعْدَكِ أَرْبَعَ كَلِمَاتٍ ثَلاَثَ مَرَّاتٍ لَوْ وُزِنَتْ بِمَا قُلْتِ مُنْذُ الْيَوْمِ لَوَزَنَتْهُنَّ سُبْحَانَ اللَّهِ وَبِحَمْدِهِ عَدَدَ خَلْقِهِ وَرِضَا نَفْسِهِ وَزِنَةَ عَرْشِهِ وَمِدَادَ كَلِمَاتِهِ
Subḥāna-llāhi wa bi-ḥamdih, ʿadada khalqih, wa riḍā nafsih, wa zinata ʿarshih, wa midāda kalimātih.
“Glory be to Allah and praise Him, as many as His creation, as pleases Him, as the weight of His Throne, and as endless as His words.”
Where this comes from
He came out at dawn and left her sitting in worship. He returned near midday and found her still there. He told her he had said four phrases three times that would outweigh all of it.
The full narration
Juwairiya reported that Allah's Messenger (ﷺ) came out from (her apartment) in the morning as she was busy in observing her dawn prayer in her place of worship. He came back in the forenoon and she was still sitting there. He (the Holy Prophet) said to her:You have been in the same seat since I left you. She said: Yes. Thereupon Allah's Apostle (ﷺ) said: I recited four words three times after I left you and if these are to be weighed against what you have recited since morning these would outweigh them and (these words) are:" Hallowed be Allah and praise is due to Him according to the number of His creation and according to the pleasure of His Self and according to the weight of His Throne and according to the ink (used in recording) words (for His Praise)
Source
Ṣaḥīḥ Muslim · 6913
- Agreed upon as authentic (al-Bukhārī / Muslim)