Is there a supplication between the Iqamah and the Takbirat al-Ihram? Is it permissible to supplicate with whatever one wishes? And what is the view regarding Imam Malik's opinion that the opening supplication (Du'a al-Istiftah) is recited before the Takbirat al-Ihram?

The hadith regarding the sunnah of supplication after the opening takbir (takbirat al-ihram) and before the recitation is sound, and this is the view of the majority of scholars. However, the Malikis held the view that it is disliked to supplicate before the recitation, basing their argument on the practice of the people of Madinah, and on the hadith of Anas: "The Prophet (peace be upon him), Abu Bakr, and Umar used to open the prayer with 'Al-hamdu lillahi Rabbil-alamin' (All praise is due to Allah, Lord of the worlds)." They also cited the hadith of the one who prayed incorrectly. Scholars other than the Malikis refuted these evidences, stating that the hadiths about the opening supplication have reached a level that cannot be rejected based on circumstantial evidence. As for the hadith of the one who prayed incorrectly, the Prophet only taught him the obligatory acts. And regarding the hadith of Anas, its intent is the commencement of recitation with Al-Fatihah, not the negation of the opening supplication. Even if it explicitly negated it, the authentic hadiths that overtly affirm it would take precedence, as they constitute an addition from trustworthy narrators.