It Is Recommended to utter Istighfār After Tasbīḥāt
Issue No.922- It is recommended to utter words of [seeking] forgiveness from Allah after tasbīḥāt arbaʿah. For instance one should say " اَسْتَغْفِرُ اللّهَ رَبِّى وَ اَتُوبُ اِلَيْهِ " or, " اَللهُمَّ اغْفِرْ لي".