db={profile:[{"_id":ObjectId("5bf5fbef16a06667027eecc2"),first_name:"Asad",last_name:"Hayat",age:"26",business_ids:[ObjectId("5ae14d2e124da839884ff939"),ObjectId("5ae14d2e124da839884ff93b")]}],business:[{"_id":ObjectId("5ae14d2e124da839884ff939"),title:"Business 1",type:"B Type",address:"Business 1 Address"},{"_id":ObjectId("5ae14d2e124da839884ff93b"),title:"Business 2",type:"C Type",address:"Business 2 Address"}]}

db.profile.aggregate([{$lookup:{from:"business",localField:"business_ids",foreignField:"_id",as:"businesses"}},{$project:{business_ids:0}}])