The Messenger of Allah ﷺ said, "When one of you perfects his Islam, every good deed he does is recorded for him tenfold, up to seven hundred times over, and every bad deed he does is recorded as just one, until he meets Allah ."
وقال رسول الله ﷺ إذا أحسن أحدكم إسلامه فكل حسنة يعملها تكتب بعشر أمثالها إلى سبع مائة ضعف وكل سيئة يعملها تكتب له بمثلها حتى يلقى الله عز وجل
A sahih hadith, narrated by Muslim, vol. 1, p. 82.From Hammam bin Munabbih, who said, this is what Abu Hurairah told us from Muhammad, the Messenger of Allah ﷺ. He said, the Messenger of Allah ﷺ said, Allah said, "When My servant resolves to do a good deed, I record it for him as a good deed even before he does it. If he then does it, I record it for him as ten like it. And when he resolves to do a bad deed, I forgive it for him as long as he has not done it. If he then does it, I record it for him as one like it."The angels said, "Lord, that servant of Yours wants to do a bad deed, though You see him better than we do."He said, "Watch him. If he does it, record it for him as one like it, and if he refrains from it, record it for him as a good deed, for he refrained from it only for My sake."