Sixth verse: فَمَنْ اتَّبَعَ هُدَايَ فَلَا يَضِلُّ وَلَا يَشْقَى. Then whoever follows My guidance, he shall not go astray nor be unhappy. (Surah Taha 20:123) Ibne Mahyar, Kulaini and other commentators have narrated from Imam Sadiq (a.s.) that: One who accepts the Wilayat of the Holy Imams (a.s.) and does not disobey their commands would not be misguided in this world and would not suffer in the hereafter.
In another traditions the Holy Prophet (S) says: O people, follow the guidance of Allah so that you may be guided and acquire goodness and improvement. Guidance of Allah is my guidance and my guidance is the guidance of Ali (a.s.), one who follows his guidance in my life and after my passing away, he has followed the guidance of Allah. He would never be misguided and a sinner. Then he said: وَمَنْ أَعْرَضَ عَنْ ذِكْرِي فَإِنَّ لَهُ مَعِيشَةً ضَنكًا وَنَحْشُرُهُ يَوْمَ الْقِيَامَةِ أَعْمَى.
And whoever turns away from My reminder, his shall be a straitened life, and We will raise him on the day of resurrection, blind. (Surah Taha 20:124) Just as in this world his hearts was blind from the Wilayat of Ali (a.s.) and perplexed in his religion, in the hereafter also he would remain blind and perplexed. Seventh verse: قَالَ رَبِّ لِمَ حَشَرْتَنِي أَعْمَى وَقَدْ كُنتُ بَصِيرًا. قَالَ كَذَلِكَ أَتَتْكَ آيَاتُنَا فَنَسِيتَهَا وَكَذَلِكَ الْيَوْمَ تُنسَى.
He will say; O my Lord why have you raised Me blind, and I was a seeing one Indeed? He will say: Even so; Our communications came to you, but you neglected them, even thus shall you be forsaken this day. (Surah Taha 20:125-126) The Imam said that ‘communications’ refer to the Holy Imams (a.s.) whose guidance you neglected, so today We would similarly neglect you, it means, I will put you in Hell. Just as you rejected our Caliphs and did not obey them.
وَكَذَلِكَ نَجْزِي مَنْ أَسْرَفَ وَلَمْ يُؤْمِنْ بِآيَاتِ رَبِّهِ وَلَعَذَابُ الْآخِرَةِ أَشَدُّ وَأَبْقَى. And thus do we recompense him who is extravagant and does not believe in the communications of His Lord. (Surah Taha 20:127) The Imam said that it means that We give him such things in exchange of his enmity due to which he left the Imams (a.s.), does not believe in their Imamate and does not follows their sayings and due to enmity towards the Aale Muhammad (S) he crosses the limit.