the Messenger of Allah ﷺ said: “there is not anyone upon the earth who says: ‘None has the right to be worshipped but Allah, and Allah is the Greatest, and there is no might nor power except by Allah, (Lā ilāha illallāh, wa Allāhu akbar, wa lā ḥawla wa lā quwwata illā billāh) except that his sins shall be pardoned, even if they were like the foam of the sea.” (Using translation from Tirmidhī 3460)
عَنْ رَسُولِ اللهِ ﷺ قَالَ مَا عَلَى الْأَرْضِ رَجُلٌ يَقُولُ لَا إِلَهَ إِلَّا اللهُ وَاللهُ أَكْبَرُ وَسُبْحَانَ اللهِ وَالْحَمْدُ لِلَّهِ وَلَا حَوْلَ وَلَا قُوَّةَ إِلَّا بِاللهِ إِلَّا كَفَّرَتْ عَنْهُ مِنْ ذُنُوبِهِ وَإِنْ كَانَتْ مِثْلَ زَبَدِ الْبَحْرِ