In the superb biography of the Prophet Muhammad by Martin Lings Muhammad: His Life Based on the Earliest Sources there is a wonderful paragraph about Muhammad’s counsel to his companions,
‘It was his wont to warn them continually that the privilege of living with him in his community brought with it a grave responsibility, for God was Just and would judge them more severely than those who lived in worse ages when it was more difficult to resist evil. He said:
“Verily ye are in an age when whoso omitteth one tenth of the law shall be doomed. But there will come an age when whoso fulfilleth one tenth of the law shall be saved”‘
(Hadith: Tirmidhi XXXI, 79.)
Muhammad: His Life Based on the Earliest Sources by Martin Lings p. 269
I find these words very comforting!