Prabhupāda: That is another thing. That is in Muhammadan. That means God is not material. That is the idea. Because here the idea is when I make something image or picture, that is material. So there is a prohibition of accepting God as material. But if you go to a higher stage, then you'll understand that if God is everything then there is no material. That is Vaiṣṇava philosophy. If God is everything, then where is material? He is spiritual. Material means when you cannot understand God. That is material. Everything is sky. When it is covered by cloud we call it is cloudy. Similarly, cloud has no existence. It comes only to cover sometimes, but the sky is eternal. Similarly, God is eternal. When you are covered by some māyā, you cannot see, you cannot understand God, that is material. So any philosophy which does not help understanding God, that is material. That is material. Otherwise, there is no material. Where is material if God is everything? Sarvam khalv idam brahma. You see?
Hayagrīva: All spirits.
Prabhupāda: All spirit. All the sky. Everywhere is sky, but when it's covered it is called cloud. Similarly when God is covered by some nonsense ideas, then it is material. Otherwise, there is no material. Therefore those who are too much absorbed in materialistic way, there is a restriction but don't attempt. Because he will be to think that God's name is just like my son's name my daughter's name. Therefore that restriction.
Ranadhir: I think when they worship, they're allowed to say God's name, it's just when they're not, when they're talking about Him outside the temple that they have to use different name.
Hayagrīva: We've got to tune some harmoniums.