Gleanings — Paragraph 157
Source (Arabic)
...طوبی لمن أقرّ بالله وآياته واعترف بأنهّ لا يُسئل عمّا يفعل هذه کلمة قد جعلها الله طراز العقآئد وأصلها وبها يقبل عمل العاملين اجعلوا هذه الکلمة نصب عيونکم لئلّا تزلّکم
Translation
Blessed is the man that hath acknowledged his belief in God and in His signs, and recognized that “He shall not be asked of His doings.” Such a recognition hath been made by God the ornament of every belief, and its very foundation. Upon it must depend the acceptance of every goodly deed. Fasten your eyes upon it, that haply the whisperings of the rebellious may not cause you to slip.