Ibn Sirin (may Allah have mercy on him) said: Sayyiduna Umar (may Allah be pleased with him) used to seek counsel in matters, to the extent that he would even consult women; and sometimes, if he found something good, he would adopt it.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب آداب القاضي / 20332