Mishkat al-Masabih 2301
Juwairiya said that the Prophet went out from her one morning at the time when he prayed the morning prayer while she was in her place of worship. He returned in the forenoon and found her sitting. He asked her if she was still in the same position as that in which he had left her, and when she replied that that was so, he said, "Since leaving you I have three times said four phrases which, if weighed against all you have said today, would prove to be heavier:
Glory be to God, and I begin with praise of Him to the number of His creatures, in accordance with His good pleasure, to the weight of His throne and the extent of His words." 

Muslim transmitted it.
وَعَن جوَيْرِية أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ خَرَجَ مِنْ عِنْدِهَا بُكْرَةً حِينَ صَلَّى الصُّبْحَ وَهِيَ فِي مَسْجِدِهَا ثُمَّ رَجَعَ بَعْدَ أَنْ أَضْحَى وَهِيَ جَالِسَةٌ قَالَ: «مَا زِلْتِ عَلَى الْحَالِ الَّتِي فَارَقْتُكِ عَلَيْهَا؟» قَالَتْ: نَعَمْ قَالَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: 
" لَقَدْ قُلْتُ بَعْدَكِ أَرْبَعَ كَلِمَاتٍ ثَلَاثَ مَرَّاتٍ لَوْ وُزِنَتْ بِمَا قُلْتِ مُنْذُ الْيَوْمِ لَوَزَنَتْهُنَّ: سُبْحَانَ اللَّهِ وَبِحَمْدِهِ عَدَدَ خَلْقِهِ وَرِضَاءَ نَفْسِهِ وَزِنَةَ عَرْشِهِ وَمِدَادَ كَلِمَاته ". رَوَاهُ مُسلم