Srimad Bhagavatam Canto 03, Chapter 09, Text 30

SB 3.9.30

bhuyas tvam tapa atistha
 vidyam caiva mad-asrayam
tabhyam antar-hrdi brahman
 lokan draksyasy apavrtan
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
O Brahma, situate yourself in penance and meditation and follow the principles of knowledge to receive My favor. By these actions you will be able to understand everything from within your heart.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
The mercy the Lord bestows upon a particular person engaged in executing the responsible work entrusted unto him is beyond imagination. But His mercy is received due to our penance and perseverance in executing devotional service. Brahma was entrusted with the work of creating the planetary systems. The Lord instructed him that when he meditated he would very easily know where and how the planetary systems must be arranged. The directions were to come from within, and there was no necessity for anxiety in that task. Such instructions of buddhi-yoga are directly imparted by the Lord from within, as confirmed in Bhagavad-gita (10.10).
Srimad Bhagavatam Canto 03, Chapter 09, Text 29
Srimad Bhagavatam Canto 03, Chapter 09, Text 31