DeviceAdded expressionPrimary benefit
Iḥtirāsبِغَيْرِ بَيِّنَةٍPrevents an unrestricted interpretation of refusal to attribute
Tatmīmفِي ضَوْءِ النَّهَارِAdds a potentially useful feature of the examination
Tadhyīlالْعِلْمُ أَمَانَةٌReinforces a particular decision with a general principle
All three can involve purposeful enlargement, but the increase in words is not enough to identify which device is operative. Ask what misunderstanding is blocked, what useful detail is supplied, or how a particular judgment is generalized. Those are the discriminating questions.