Remember! Spending on something in which spending is forbidden by Shari’ah or by norms, i.e. spending on sins and transgression, spending on strangers in such a way that you ignore your own family members and household, is called extravagance. (Baatini Beemariyon ka Ilaj, pp. 301)

If extravagance is against the Shari’ah, then it is Haraam and if it is against the norms, then it is Makruh Tanzeehi. (Hadiqa-tun-Nadiyyah, vol. 2, pp. 28)

It is stated on page no. 256 of the masterpiece, Faizan-e-Sunnat, volume 1, authored by Shaykh-e-Tareeqat, Ameer-e-Ahl-e-Sunnat, founder of Dawat-e-Islami, ‘Allamah Maulana Abu Bilal Muhammad Ilyas Attar Qaadiri Razavi Ziyaee دَامَـتْ بَـرَكَـاتُـهُـمُ الْـعَـالِـيَـه:

Mufassir-e-Shaheer, Hakeem-ul-Ummat, Mufti Ahmad Yar Khan رَحْمَةُ اللهِ تَعَالٰی عَلَيْه mentions in Tafseer Na’eemi, volume 8, page 390:

There are many explanations of extravagance.

1       Considering Halal things to be Haraam,

2       Using Haraam things,

3       Eating, drinking and wearing more than one’s needs,

4       Eating, drinking or wearing whatever one wants to,

5       Keep eating and drinking frequently during the day and night which makes one have stomach problems, fall ill,

6       Eating and drinking the things that are harmful to health,

7       Always thinking about eating, drinking and wearing. Thinking that what I will eat now, what will I drink now? (Ruh-ul-Bayan, vol. 3, pp. 154),

8       Eating for heedlessness,

9       Eating to commit a sin,

10     Being used to excellent foods and clothing so much so that he cannot eat ordinary food,

11    Considering excellent foods to be the result of his own efforts.