Sayyiduna Suraqah bin Ju'shum (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) taught us: "When any one of you enters the toilet, he should lean on his left foot and keep the right one upright." Da'if (weak).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 457