بسم الله الرحمن الرحيم
الحمد لله والصلاة والسلام على رسول الله وعلى آله وصحبه
In his ‘Asrar al-Salah‘, Imam Ibn Qayyim al-Jawziyyah mentioned three kinds of people in regards to the actions of their limbs:
Those whose limbs are engaged in the service of their Rabb, to fulfill the purpose for which they are created. They are among the successful ‘merchants’ who have made Allah’s obedience to be their trade and livelihood, from which they yield the greatest profits. Salah has been prescribed in such a manner, that the entire body follows the lead of the heart – so that each limb practices its individual act of worship, demonstrating its slavery to Allah. These are the category of people who have realised the grace of Allah upon them and have understood the true purpose behind the creation of their limbs, and therefore they dedicate their limbs to worshiping their Rabb, all the while safeguarding them from being involved in matters that may displease Him; so they fulfill the duties and responsibilities of their slavery to Allah.
Those who utilise their limbs in pursuit of what they have not been created for, and dedicate them to committing sins and disobeying Allah. They are the ones whose endeavors fail and whose trade is never successful – and because of that, they deserve Allah’s Punishment and Wrath and are precluded from receiving His Pleasure and Reward.
Those who completely suspend their limbs from engaging in any kind of productive activity; they neither serve the purpose for which they are created nor use them in obtaining the good of this worldly life, due to their ignorance and idleness. This group is even worse than the previous group, because mankind is created to worship and obey and not for incapacity (and impotence). In fact, the most despised people to Allah are the useless type who are neither productive in this life nor endeavor to have a share in the Hereafter – they are condemned in every sense. If a person is condemned when his endeavors are dedicated for this life only, then he will without doubt be more condemned when his endeavors are dedicated neither for this life nor for his Hereafter.
And we seek refuge with Allah from being among the last two.