Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:40:81 –

And He shows you His signs. So which of the signs of Allah do you deny?  

And He shows you His signs. So which of God’s signs, that is, ˹the signs˺ that prove His Oneness, do you reject? (the interrogative here is meant as a rebuke; ayya, ‘which of’ is more commonly made masculine than feminine).
القرآن:٤٠:٨١ –

وَيُرِيكُمْ آيَاتِهِ فَأَيَّ آيَاتِ اللَّهِ تُنْكِرُونَ  

{ويريكم آياته فأيَّ آيات الله} أي الدالة على وحدانيته {تنكرون} استفهام توبيخ، وتذكير أي أشهر من تأنيثه.