The word(s) "foothold" appears 3 time(s) in 3 verse(s) in Quran in Muhammad Pickthal translation.

(1) And when they went into the field against Goliath and his hosts they said: Our Lord! Bestow on us endurance, make our foothold sure, and give us help against the disbelieving folk.

(سورة البقرة, Al-Baqara, Chapter #2, Verse #250)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)

(2) Their cry was only that they said: Our Lord! forgive us for our sins and wasted efforts, make our foothold sure, and give us victory over the disbelieving folk.

(سورة آل عمران, Aal-i-Imraan, Chapter #3, Verse #147)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)

(3) O ye who believe! If ye help Allah, He will help you and will make your foothold firm.

(سورة محمد, Muhammad, Chapter #47, Verse #7)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)