Mark 10:10
Indoors the disciples began questioning Jesus again on the same subject.
Mark 4:10
When He was alone, the Twelve and the others who were about Him requested Him to explain His figurative language.
Mark 9:28
After the return of Jesus to the house His disciples asked Him privately, "How is it that we could not expel the spirit?"
Mark 9:33
So they came to Capernaum; and when in the house He asked them, "What were you arguing about on the way?"
Treasury of Scripture Knowledge
Summary
And in the house his disciples asked him again of the same matter.