Sunan an-Nasa'i al-Kubra 11856

Sūwayd b. Naṣr > ʿAbdullāh > Sufyān > Sulaymān / al-Aʿmash > Khaythamah Wahū Ibn ʿAbd al-Raḥman

If you want something good, do not postpone it for tomorrow. And if you are engaged in a matter of the hereafter, stay as long as you can. And if you are in a worldly matter, focus on it. And when you pray, the devil says, "You are being delusional." So, multiply it in length.

عَنْ سُوَيْدِ بْنِ نَصْرٍ عَنْ عَبْدِ اللهِ عَنْ سُفْيَانَ عَنْ سُلَيْمَانَ وَهُوَ الْأَعْمَشُ عَنْ خَيْثَمَةَ وَهُوَ ابْنُ عَبْدِ الرَّحْمَنِ عَنِ الْحَارِثِ بْنِ قَيْسٍ الْجُعْفِيِّ قَالَ

إِذَا أَرَدْتَ أَمْرًا مِنَ الْخَيْرِ فَلَا تُؤَخِّرْهُ لِغَدٍ وَإِذَا كُنْتَ فِي أَمَرِ آخِرَةٍ فَامْكُثْ مَا اسْتَطَعْتَ وَإِذَا كُنْتَ فِي أَمَرِ الدُّنْيَا فَتَوَجَّهْ وَإِذَا كُنْتَ تُصَلِّي فَقَالَ الشَّيْطَانُ إِنَّكَ تُرَائِي فَزِدْهَا طَوْلًا