These will be heavier

The Mother of the Believers, Juwairiyah bint Al-Harith reported that the Prophet (sallAllahu 'alyhi wasallam) came out from my apartment in the morning as I was busy in performing Dhikr after Fajr (the dawn prayer). He came back in the forenoon and found me sitting there. The Prophet (sallAllahu 'alyhi wasallam) said,” Are you still in the same position as I left you?” I replied in the affirmative.
Thereupon the Prophet (sallAllahu 'alyhi wasallam) said,
 “I recited four phrases 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-Allah Wa bihamdihi, ‘adada khalqihi, wa rida-a 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 ink that may be used in recording the words (for His Praise).”

(Muslim 4/2090)