The meaning of the hiding of Allah, Exalted and Glorious is He, to four within four

We were told by my paternal uncle, Muhammed bin Abi’l-Qasim, from Ahmad bin Muhammed bin Khalid al-Barqi, from Qasim bin Yahya, from his grandfather, Hasan bin Rashid, from Abu Baseer, from Muhammed bin Muslim, from Abu Ja’far, Muhammed bin Ali al-Baqir, peace be upon him, from his father, Ali bin Hussain, from his father, Hussain bin Ali, from his father, Ali bin Abi Talib, peace be upon them both, that he said: Indeed, Allah, Blessed and Exalted is He, hid four in four: He hid His satisfaction in obedience to Him, so verily, do not belittle anything from His obedience, for perhaps it may accord with His satisfaction while you do not know; He hid His anger in disobedience to Him, so verily, do not belittle anything from His disobedience, for perhaps it may accord with His anger while you do not know; He hid His response in praying to Him, so verily, do not belittle anything from His prayer, for perhaps it may accord with His response while you do not know; and He hid His Ally among His servants, so verily, do not belittle any servant among the servants of Allah, for perhaps he may be His Ally while you do not know.