Śrīmad-Bhāgavatam · Text 11.2.35
Who is speaking and story frame
यानास्थाय नरो राजन् न प्रमाद्येत कर्हिचित् ।
धावन् निमील्य वा नेत्रे न स्खलेन्न पतेदिह ॥ ३५ ॥
yān āsthāya naro rājan
na pramādyeta karhicit
dhāvan nimīlya vā netre
na skhalen na pated iha
O King, one who accepts this process of devotional service to the Supreme Personality of Godhead will never blunder on his path in this world. Even while running with eyes closed, he will never trip or fall.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.