when they went with him they agreed to put him in the bottom of a well. we revealed to him you shall tell them of what they did when they are not aware 
فلما ذهبوا به وأجمعوا أن يجعلوه في غيابت الجب وأوحينا إليه لتنبئنهم بأمرهم هذا وهم لا يشعرون