Sayyiduna Ali (may Allah be pleased with him) said regarding Allah Almighty’s statement: “For those who do good is the best reward and even more” (__QUR_N__): The “even more” is a chamber of pearl which has four doors; its structure and its doors will all be made from a single pearl.
Hadith Referenceسنن سعید بن منصور / كتاب التفسير / 1058
Hadith Gradingمحدثین:سنده ضعيف للانقطاع بين الحكم بن عتيبة وعلي رضي الله عنه.
Alqamah (may Allah have mercy on him) was asked about excess, so he said: The reward for a good deed is given tenfold.
Hadith Referenceسنن سعید بن منصور / كتاب التفسير / 1060
Hadith Gradingمحدثین:سنده فيه قابوس، وتقدم الكلام فيه، لكنه لم ينفرد به، بل تابعه الأعمش فروايته تتقوى بهذه المتابعة إن سلم الخبر من تدليس الأعمش، فإنه لم يصرح بالسماع.
Saeed (may Allah have mercy on him) says: I heard Sufyan (may Allah have mercy on him) say: There is no disagreement in the interpretation of the Qur'an; in fact, it is comprehensive speech from which this meaning can be taken and that as well.
Hadith Referenceسنن سعید بن منصور / كتاب التفسير / 1061