Arif billah Hadhrat Dr Abdul Hayy Arifi (may Allah have mercy on him) instructed the seekers to supplicate the following after each salah,

اللَّهُمَّ أَعِنِّيْ عَلَى ذِكْرِكَ وَشُكْرِكَ وَحُسْنِ عِبَادَتِكَ

(Allahumma a’inni ‘ala dhikrika wa shukrika wa husni ‘ibadatika)

O Allah! Assist me in remembering You, in thanking You, and in worshipping You in the best of manners.

This is gift of love. Presented by the Allah’s beloved to one on his blessed Companions.

One day he (Prophet Muhammad [Allah bless him and grant him peace]) took Mu’adh ibn Jabal (may Allah be pleased with him) by the hand and said, “O Mu’adh, by Allah (exalted is He) I love you, and I advise you, O Mu’adh, never forget to recite, after every prayer (the above).”
[Sahih Ahmad 5:245, Sahih abu Dawud 2:86, an-Nasa’i]