His statement: "The believers have attained success" means: in Allah. [...] From Sa'id, from Qatadah who said: It was mentioned to us that Ka'b said: "Indeed, Allah did not create anything with His Hand except for three things: He created Adam with His Hand, He wrote the Torah with His Hand, and He planted Paradise with His Hand. Then He said to it: 'Speak.' And it said: 'The believers have attained success.'"
قَوْلُهُ: ﴿قَدْ أَفْلَحَ الْمُؤْمِنُونَ﴾ يَعْنِي: بِاللَّهِ [ … ] عَنْ سَعِيدٍ، عَنْ قَتَادَة: قَالَ: ذكر لَنَا أَن كَعْبًا قَالَ: " إِنَّ اللَّهَ لَمْ يَخْلُقْ بِيَدِهِ إِلَّا ثَلَاثًا: خَلَقَ آدَمَ بِيَدِهِ، وَكَتَبَ التَّوْرَاةَ بِيَدِهِ، وَغَرَسَ الْجَنَّةَ بِيَدِهِ، ثُمَّ قَالَ لَهَا: تَكَلَّمِي، فَقَالَتْ: قَدْ أَفْلَحَ الْمُؤْمِنُونَ ".