And if wa-la-in the lām is for oaths you were to ask them ‘Who sends down water from the heaven and therewith revives the earth after its death?’ They would assuredly say ‘God’ so how can they ascribe partners to Him?! Say to them ‘Praise be to God!’ that the proof has been established against you. Nay but most of them do not realise their contradictiousness in this respect.