Al-Kāfi - Volume 3 > When Tayammum Is Necessary and Finding Water Thereafter
Hadith #6

6ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ ابْنِ مَحْبُوبٍ عَنْ دَاوُدَ الرَّقِّيِّ قَالَ قُلْتُ لأَبِي عَبْدِ الله (عَلَيْهِ الْسَّلام) أَكُونُ فِي السَّفَرِ وَتَحْضُرُ الصَّلاَةُ وَلَيْسَ مَعِي مَاءٌ وَيُقَالُ إِنَّ الْمَاءَ قَرِيبٌ مِنَّا أَ فَأَطْلُبُ الْمَاءَ وَأَنَا فِي وَقْتٍ يَمِيناً وَشِمَالاً قَالَ لاَ تَطْلُبِ الْمَاءَ وَلَكِنْ تَيَمَّمْ فَإِنِّي أَخَافُ عَلَيْكَ التَّخَلُّفَ عَنْ أَصْحَابِكَ فَتَضِلَّ فَيَأْكُلَكَ السَّبُعُ.

6. A number of our people have narrated from Ahmad ibn Muhammad from ibn Mahbub from Dawud al-Riqqiy who has said the following: “I once said to abu ’Abd Allah, ‘Alayhi al-Salam. ‘During a journey if I cannot find water when it is time of Salah (prayer); but it is said that water is nearby. Must I then search in the right and left directions when it is time for Salah (prayer)?’ He (the Imam) said, ‘Do not search for water, instead take Tayammum; I fear you may remain behind your companions and you may get lost or be eaten by the beasts.’”