Tafsir of Al-Isra 17:30

إن ربك يبسط الرزق لمن يشاء ويقدر

Truly, your Lord expands the provision for whom He wills and straitens (for whom He wills). This Ayah is telling us that Allah is the One Who provides or withholds, the Bestower Who is running the affairs of His creation as He wills. He makes rich whomever He wills, and He makes poor whomever He wills, by the wisdom that is His. He said:

إنه كان بعباده خبيرا بصيرا

Verily, He is Ever All-Knower, All-Seer of His servants. meaning, He knows and sees who deserves to be rich and who deserves to be poor. In some cases, richness may be decreed so that a person gets carried away, leading to his own doom. In other cases, poverty may be a punishment. We seek refuge with Allah from both