الْحَمْدُ لِلَّهِ حَمْداً كَثِيْراً طَيِّباً مُبَارَكاً فِيْهِ، غَيْرَ [مَكْفِيٍّ وَلَا] مُوَدَّعٍ، وَلَا مُسْتَغْنىً عَنْهُ رَبُّنَا

Allāh be praised with an abundant beautiful blessed praise, a never-ending praise, a praise which we will never bid farewell to and an indispensable praise, He is our Lord.

Reference: Allāh be praised with an abundant beautiful blessed praise, a never-ending praise, a praise which we will never bid farewell to and an indispensable praise, He is our Lord. Al-Bukhārī (#5458, 6/214) and al-Tirmidhī (#3456, 5/507), and the wording is the latter's.